Suresh, G and Chetukuri, A and Veerendrakumar, H V and Sharma, V and Singh, K and Janila, P and Pandey, M K and Choudhary, S (2025) Advancing Groundnut Breeding for Semi-Arid Tropics through HighThroughput Phenotyping for Early Vigour Traits. In: Advances in Arachis through Genomics and Biotechnology (AAGB-2025), 23-25 March 2025, Novotel, Goa, India.
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Early vigour is a vital trait in groundnut (Arachis hypogaea L.) that enhances adaptation to soil moisture stress in semi-arid tropics, where early rainfall cessation often limits crop productivity. Its importance in improving yield potential under such conditions has been increasingly recognized. However, the lack of efficient high-throughput phenotyping tools has restricted the rapid and precise identification of early vigour lines in breeding programs. This study addresses this gap by evaluating a groundnut mini-core set (184 accessions), 5 checks, and 3 elite breeding selections from the field testing using the high-throughput phenotyping platform “LeasyScan.” LeasyScan employs 3D point cloud technology and AI to measure canopy and transpiration dynamics in a 6-week assay. The experiment was conducted in an alpha-lattice design with three replications. Key recorded traits included digital biomass, leaf area index, number of primary branches, projected leaf area, light penetration depth, plant height, and 3D leaf area. A 3- to 6-fold genetic variation was observed for various adaptation traits. Plant height, 3D leaf area, and digital biomass emerged as robust indicators growth rate and used for identifying early vigour lines. Five high-vigour genotypes - ICG4670, ICG13491, ICG332, ICG7190, and ICG15309 and five low-vigour genotypes - ICG6402, ICG532, ICG2925, ICG11855, and ICG9037 were identified. Future research involving whole-genome re-sequencing and GWAS analysis aims to uncover candidate genes linked to early vigour traits, enabling the development of markers for effective selection in regions without highthroughput phenotyping facilities. This study underscores the transformative potential of highthroughput phenotyping in accelerating the development of drought-resilient, high-yielding groundnut varieties, contributing significantly to global food security efforts.
| Item Type: | Conference or Workshop Item (Poster) |
|---|---|
| Divisions: | Center of Excellence in Genomics and Systems Biology Genebank Global Research Program - Accelerated Crop Improvement |
| CRP: | UNSPECIFIED |
| Uncontrolled Keywords: | Groundnut, Early vigour, High-throughput phenotyping, Correlation |
| Subjects: | Mandate crops > Groundnut Others > Oilseeds |
| Depositing User: | Mr Nagaraju T |
| Date Deposited: | 09 Jul 2025 04:39 |
| Last Modified: | 09 Jul 2025 05:21 |
| URI: | http://oar.icrisat.org/id/eprint/13218 |
| Acknowledgement: | UNSPECIFIED |
| Links: | |
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